Pneumatic quantitative subpackaging device

Abstract

The utility model relates to the technical field of sub-packaging, and discloses a pneumatic quantitative sub-packaging device which comprises a rack, and a sub-packaging structure, a loading disc and a stepping driving mechanism which are arranged on the rack, the split charging structure comprises a liquid inlet pipe, a pneumatic liquid supply pump and a liquid distribution pipe, the pneumatic liquid supply pump is connected between the liquid inlet pipe and the liquid distribution pipe, the liquid distribution pipe is provided with a plurality of liquid distribution openings, the liquid distribution openings are provided with flow valves, and the material carrying disc is movably installed on the lower side of the liquid distribution pipe; the stepping driving mechanism comprises a feeding air cylinder, a first rotating shaft, a first rack, a first gear, a second gear and a second rack, the feeding air cylinder is connected with the first rack, and the first rotating shaft is rotationally installed on the rack; the first rotating shaft is sleeved with the first gear, a first one-way bearing is further arranged between the first gear and the first rotating shaft, and the first rack is meshed with the first gear; the second gear is installed on the first rotating shaft in a rotation stopping mode, the second rack is fixedly arranged on the lower side of the material carrying disc, and the second gear is meshed with the second rack.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of split charging, particularly to a pneumatic quantitative split charging device. BACKGROUND

[0002] In industrial production, flammable and explosive liquids are usually applied, which need to be stored and split charged in a special working environment meeting the anti-explosion requirements. Anti-static and electric spark are particularly required during split charging.

[0003] At present, the commonly used liquid split charging equipment works in a manual material changing mode and a conveying line mode, and needs to use an electric appliance meeting the anti-explosion requirements, which involves various electrical elements and needs to be additionally provided with an anti-explosion device to meet the strict anti-explosion requirements. However, in the existing liquid split charging equipment, the electrical elements still have a great safety risk during operation, and the anti-explosion device occupies a large space, which is difficult to meet the safety requirements of flammable and explosive liquid split charging. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem that in the existing liquid split charging equipment, the electrical elements still have a great safety risk during operation, and the anti-explosion device occupies a large space, which is difficult to meet the safety requirements of flammable and explosive liquid split charging.

[0005] In order to solve the above technical problem, the utility model provides a technical scheme of a pneumatic quantitative split charging device:

[0006] The pneumatic quantitative split charging device comprises a rack, a split charging structure, a material loading disc and a step driving mechanism, the split charging structure is arranged at the upper part of the rack, the material loading disc and the step driving mechanism are both installed on the rack, and the step driving mechanism is in transmission connection with the material loading disc;

[0007] The split charging structure comprises a liquid inlet pipe, a pneumatic liquid supply pump and a liquid distribution pipe, the pneumatic liquid supply pump is connected between the liquid inlet pipe and the liquid distribution pipe, the liquid distribution pipe is provided with a plurality of liquid distribution openings, a plurality of the liquid distribution openings are both provided with flow valves, and the material loading disc is movably installed at the lower side of the liquid distribution pipe;

[0008] The step driving mechanism comprises a material loading cylinder, a first rotating shaft, a first rack gear, a first gear, a second gear and a second rack gear, the material loading cylinder is connected with the first rack gear and extends in the same direction, and the first rotating shaft is rotatably installed on the rack;

[0009] The first gear is sleeved on the first rotating shaft, and a first one-way bearing is further arranged between the first gear and the first rotating shaft, and the first rack gear is in meshing connection with the first gear; the second gear is rotationally installed on the first rotating shaft, the second rack gear is fixedly arranged at the lower side of the material loading disc, and the second gear is in meshing connection with the second rack gear.

[0010] Further, the first one-way bearing is used for linkage of the first gear and the first rotating shaft when the upper feeding cylinder drives the loading disc to move in the feeding direction, and is used for separation of the first gear and the first rotating shaft when the upper feeding cylinder drives the loading disc to move in the resetting direction.

[0011] Further, a pneumatic stroke switch is further installed on the rack, and the pneumatic stroke switch is located at the lower side of the distribution pipe and is used for detecting whether the material bottle is in a liquid receiving position.

[0012] Further, an upper feeding pneumatic clutch is further installed on the rack, and the upper feeding pneumatic clutch is connected with the upper feeding cylinder and the first rack in the vertical direction to drive the first rack to engage with the first gear when the material is fed step by step.

[0013] Further, the step driving mechanism further comprises a resetting cylinder, a second rotating shaft, a third rack, a third gear, a fourth gear and a fourth rack, the second rotating shaft is arranged in the length direction of the distribution pipe and is spaced apart from the first rotating shaft, and the resetting cylinder is connected with the third rack and extends in the same direction.

[0014] The third gear is sleeved on the second rotating shaft, and a second one-way bearing is arranged between the third gear and the second rotating shaft, the third rack is engaged with the third gear, the fourth gear is rotationally installed on the second rotating shaft, the fourth rack is fixedly arranged at the lower side of the loading disc, the fourth gear is engaged with the fourth rack, and the fourth rack is arranged in parallel and spaced apart from the second rack.

[0015] Further, the second one-way bearing is used for linkage of the third gear and the second rotating shaft when the resetting cylinder drives the loading disc to move in the resetting direction, and is used for separation of the third rack and the second rotating shaft when the resetting cylinder drives the loading disc to move in the feeding direction.

[0016] Further, two positioning plates are arranged on the loading disc and are arranged in parallel and spaced apart in the vertical direction, and a plurality of positioning holes are arranged on each of the two positioning plates and are distributed in a matrix along the length direction of the distribution pipe and along the extending direction of the upper feeding cylinder.

[0017] Further, in the extending direction of the upper feeding cylinder, the unit distance between the adjacent two material bottles of the positioning plate is equal to the driving stroke of the upper feeding cylinder.

[0018] Further, a lifting cylinder is further installed on the upper side of the rack, the driving direction of the lifting cylinder extends in the vertical direction, and the distribution pipe is fixedly connected to the lower end of the lifting cylinder.

[0019] The pneumatic quantitative sub-packaging device has the beneficial effects that: the pneumatic quantitative sub-packaging device adopts the design form of a rack, a sub-packaging structure, a material loading disc and a stepping driving mechanism, the sub-packaging structure is arranged on the upper portion of the rack, the sub-packaging structure comprises a liquid inlet pipe, a pneumatic liquid supply pump and a liquid distribution pipe, and the pneumatic liquid supply pump is connected between the liquid inlet pipe and the liquid distribution pipe.

[0020] The material loading disc and the stepping driving mechanism are both mounted on the rack, and the stepping driving mechanism is in transmission connection with the material loading disc, the stepping driving mechanism comprises a feeding cylinder, a first rotating shaft, a first rack gear, a first gear, a second gear and a second rack gear, the feeding cylinder is connected with the first rack gear and extends in the same direction, and the first rotating shaft is rotatably mounted on the rack; the first gear is sleeved on the first rotating shaft. The first rack gear is in engagement with the first gear, that is, the first rack gear and the first gear form a first gear rack structure, the linear motion of the feeding cylinder can drive the rotary motion of the first gear, and a first one-way bearing is further arranged between the first gear and the first rotating shaft, the first one-way bearing only converts the one-way linear motion of the feeding cylinder, so that the first rotating shaft performs intermittent rotary motion.

[0021] In addition, the second gear is rotationally fixed on the first rotating shaft, the second rack gear is fixedly arranged on the lower side of the material loading disc, and the second gear is in engagement with the second rack gear. The second gear and the second rack gear form a second gear rack structure, since the first gear drives the first rotating shaft to synchronously and intermittently rotate, the second gear is also driven to synchronously and intermittently rotate, and finally the stepping feeding action of the second rack gear and the material loading disc is converted, so that the material bottles on the material loading disc can be aligned with the corresponding liquid distribution ports in batches. It is the combined work of the pneumatic liquid supply pump, the stepping driving mechanism and other components that avoids using electrical or electronic components in the sub-packaging space, saves the space occupied by the explosion-proof equipment, and thus realizes the purpose of safely and accurately sub-packaging flammable and explosive liquids. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a front view of the pneumatic quantitative sub-packaging device in the embodiment of the utility model;

[0023] Figure 2 is a side view of the pneumatic quantitative sub-packaging device in the embodiment of the utility model;

[0024] Figure 3 is a top view of the stepping driving mechanism of the pneumatic quantitative sub-packaging device in the embodiment of the utility model;

[0025] Figure 4 is Figure 1 is a zoomed-in view of the step drive mechanism;

[0026] In the figure: 1-frame, 2-structure of separate installation, 21-liquid inlet pipe, 22-pneumatic liquid supply pump, 23-liquid distribution pipe, 24-flow valve, 25-lifting cylinder, 26-liquid storage container, 3-charge tray, 30-bottle, 31-positioning plate, 32-pneumatic travel switch, 4-step drive mechanism, 41-feeding cylinder, 411-first rack, 42-first rotating shaft, 420-first one-way bearing, 421-first gear, 422-second gear, 423-second rack, 43-feeding pneumatic clutch, 44-reset cylinder, 441-third rack, 45-second rotating shaft, 450-second one-way bearing, 451-third gear, 452-fourth gear, 453-fourth rack, 46-reset pneumatic clutch. DETAILED DESCRIPTION

[0027] The specific embodiments of the present application will be further described in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0028] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like in the present application are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0029] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0031] like Figures 1 to 4 As shown, a pneumatic quantitative dispensing device according to an embodiment of the present invention includes a frame 1, a dispensing structure 2, a material tray 3, and a stepping drive mechanism 4. The dispensing structure 2 is disposed on the upper part of the frame 1. The material tray 3 and the stepping drive mechanism 4 are both mounted on the frame 1, and the stepping drive mechanism 4 is connected to the material tray 3 in a transmission manner. The dispensing structure 2 includes an inlet pipe 21, a pneumatic liquid supply pump 22, and a dispensing pipe 23. The pneumatic liquid supply pump 22 is connected between the inlet pipe 21 and the dispensing pipe 23. The dispensing pipe 23 has multiple dispensing ports, and each of the multiple dispensing ports is equipped with a flow valve 24. The material tray 3 is movably mounted on the lower side of the dispensing pipe 23.

[0032] The stepper drive mechanism 4 includes a feeding cylinder 41, a first rotating shaft 42, a first rack 411, a first gear 421, a second gear 422, and a second rack 423. The feeding cylinder 41 is connected to the first rack 411 and extends in the same direction. The first rotating shaft 42 is rotatably mounted on the frame 1. The first gear 421 is fitted onto the first rotating shaft 42, and a first one-way bearing 420 is provided between the first gear 421 and the first rotating shaft 42. The first rack 411 meshes with the first gear 421. The second gear 422 is anti-rotatingly mounted on the first rotating shaft 42. The second rack 423 is fixedly disposed on the lower side of the material tray 3, and the second gear 422 meshes with the second rack 423.

[0033] This pneumatic quantitative dispensing device adopts a design consisting of a frame 1, a dispensing structure 2, a material tray 3, and a stepping drive mechanism 4. The dispensing structure 2 is located on the upper part of the frame 1 and includes an inlet pipe 21, a pneumatic liquid supply pump 22, and a dispensing pipe 23. The pneumatic liquid supply pump 22 is connected between the inlet pipe 21 and the dispensing pipe 23. During operation, the pneumatic liquid supply pump 22 draws liquid from the storage container 26 into the inlet pipe 21, and then distributes the liquid evenly to multiple dispensing ports via the dispensing pipe 23. Since each dispensing port is equipped with a flow valve 24, and the flow valve 24 is preset with an opening diameter, the liquid can be quantitatively fed into the material bottle below. The pneumatic pumping of liquid ensures the accuracy and safety of dispensing.

[0034] The material carrier 3 and the stepper drive mechanism 4 are both mounted on the frame 1, and the stepper drive mechanism 4 is connected to the material carrier 3. The stepper drive mechanism 4 includes a feeding cylinder 41, a first rotating shaft 42, a first rack 411, a first gear 421, a second gear 422, and a second rack 423. The feeding cylinder 41 is connected to the first rack 411 and extends in the same direction. The first rotating shaft 42 is rotatably mounted on the frame 1. The first gear 421 is fitted onto the first rotating shaft 42. The first rack 411 meshes with the first gear 421, that is, the first rack 411 and the first gear 421 form a first gear rack structure. The linear motion of the feeding cylinder 41 can drive the rotational motion of the first gear 421. A first one-way bearing 420 is also provided between the first gear 421 and the first rotating shaft 42. The first one-way bearing 420 only converts the one-way linear motion of the feeding cylinder 41, so that the first rotating shaft 42 performs intermittent rotational motion.

[0035] In addition, the second gear 422 is anti-rotatingly mounted on the first rotating shaft 42, and the second rack 423 is fixedly mounted on the lower side of the loading tray 3. The second gear 422 meshes with the second rack 423. The second gear 422 and the second rack 423 form a second gear and rack structure. Since the first gear 421 drives the first rotating shaft 42 to rotate synchronously and intermittently, it also drives the second gear 422 to rotate synchronously and intermittently. This ultimately translates into a stepping feeding action of the second rack 423 and the loading tray 3, allowing the bottles 30 on the loading tray 3 to be aligned with the corresponding dispensing ports in batches. It is precisely by combining the coordinated work of components such as the pneumatic liquid supply pump 22 and the stepping drive mechanism 4 that the use of electrical or electronic control components in the dispensing space is avoided, saving the space occupied by explosion-proof equipment, thereby achieving the purpose of safely and accurately dispensing flammable and explosive liquids.

[0036] In this embodiment, the first one-way bearing 420 is used to link the first gear 421 with the first rotating shaft 42 when the feeding cylinder 41 drives the material tray 3 to move in the feeding direction; and to separate the first gear 421 from the first rotating shaft 42 when the feeding cylinder 41 drives the material tray 3 to move in the reset direction. That is, only when the feeding cylinder 41 drives the material tray 3 to move in the feeding direction can the first gear rack structure drive the first rotating shaft 42 and the second gear 422 to rotate synchronously, thereby effectively driving the material tray 3 to feed normally in a step-by-step manner; otherwise, the first gear rack structure only drives the first gear 421 to rotate idly, at which time the material tray 3 remains stationary.

[0037] As a further preferred embodiment, a pneumatic limit switch 32 is also installed on the frame 1. The pneumatic limit switch 32 is located below the dispensing pipe 23 and is used to detect whether the material bottle 30 is in the liquid receiving position. Both the pneumatic limit switch 32 and the feeding cylinder 41 are controlled by a PLC. When the pneumatic limit switch 32 senses that the material bottle is in the liquid receiving position, it is mechanically driven to connect the air circuit. The pressure switch at the control terminal of the PLC circuit senses the pressure change and obtains the corresponding position signal to continue operation according to the program logic.

[0038] Furthermore, a pneumatic feeding clutch 43 is also installed on the frame 1. The pneumatic feeding clutch 43 is vertically connected to the feeding cylinder 41 and the first rack 411, so as to drive the first rack 411 to mesh with the first gear 421 during step feeding. Figure 4 As shown, during the feeding operation, the first rack 411 can be controlled to move upward. When the first rack 411 meshes with the first gear 421, the feeding cylinder 41 can be started to perform step feeding drive operation.

[0039] It should be noted that the stepper drive mechanism 4 also includes a reset cylinder 44, a second rotating shaft 45, a third rack 441, a third gear 451, a fourth gear 452, and a fourth rack 453. The second rotating shaft 45 and the first rotating shaft 42 are spaced apart along the length of the liquid distribution pipe 23. The reset cylinder 44 is connected to the third rack 441 and extends in the same direction. The third gear 451 is mounted on the second rotating shaft 45, and a second one-way bearing 450 is provided between the third gear 451 and the second rotating shaft 45. The third rack 441 meshes with the third gear 451. The fourth gear 452 is mounted on the second rotating shaft 45 to prevent rotation. The fourth rack 453 is fixedly mounted on the lower side of the material tray 3. The fourth gear 452 meshes with the fourth rack 453, and the fourth rack 453 is arranged parallel to and spaced apart from the second rack 423.

[0040] Similarly, since the third rack 441 meshes with the third gear 451, the third rack 441 and the third gear 451 form a third gear rack structure. The linear motion of the reset cylinder 44 can drive the rotational motion of the third gear 451. Furthermore, a second one-way bearing 450 is provided between the third gear 451 and the second rotating shaft 45. The second one-way bearing 450 only converts the one-way linear motion of the reset cylinder 44, causing the second rotating shaft 45 to perform intermittent rotational motion. The fourth gear 452 and the fourth rack 453 form a fourth gear rack structure. Since the third gear 451 drives the second rotating shaft 45 to rotate synchronously and intermittently, it also drives the fourth gear 452 to rotate synchronously and intermittently, ultimately transforming it into a stepping reset action of the fourth rack 453 and the material tray 3.

[0041] Specifically, the second one-way bearing 450 is used to link the third gear 451 with the second rotating shaft 45 when the reset cylinder 44 drives the material tray 3 to move in the reset direction; and to separate the third rack 441 from the second rotating shaft 45 when the reset cylinder 44 drives the material tray 3 to move in the feeding direction. That is to say, the third gear rack structure can drive the second rotating shaft 45 and the third gear 451 to rotate synchronously only when the reset cylinder 44 drives the material tray 3 to move in the reset direction, thereby effectively driving the material tray 3 to normal step reset; otherwise, the third gear rack structure only drives the third gear 451 to rotate idly, at which time the material tray 3 remains stationary.

[0042] It should be noted that a reset pneumatic clutch 46 is also installed on the frame 1. The reset pneumatic clutch 46 is vertically connected to the reset cylinder 44 and the third rack 441, so as to drive the third rack 441 to mesh with the third gear 451 during step reset. Figure 4 As shown, during the reset operation, the third rack 441 can be controlled to move upward. The engagement of the third rack 441 with the third gear 451 activates the reset cylinder 44 to perform a step-by-step reset drive. Feeding and reset are performed separately. The reset operation is performed only after all bottles have been fed and packaged, eliminating the need for manual reset.

[0043] As a further preferred embodiment, the loading tray 3 is provided with two positioning plates 31, which are arranged vertically at intervals. Each positioning plate 31 has multiple positioning holes, which are distributed in a matrix along the length of the dispensing pipe 23 and the extension direction of the feeding cylinder 41. The upper and lower positioning plates 31 can accurately define the bottle, ensuring the stability and positional reliability of the bottle during movement.

[0044] In addition, in the extension direction of the feeding cylinder 41, the unit distance between two adjacent bottles of the positioning plate 31 is equal to the driving stroke of the feeding cylinder 41. This ensures that for each driving stroke of the feeding cylinder 41, the bottle of the positioning plate 31 can be fed a unit distance, achieving the purpose of batch feeding and packaging. A lifting cylinder 25 is also installed on the upper side of the frame 1. The driving direction of the lifting cylinder 25 extends vertically, and the dispensing pipe 23 is fixedly connected to the lower end of the lifting cylinder 25. The lifting cylinder 25 can drive the dispensing pipe 23 to extend into and out of the bottle mouth to prevent the safety risks that may be caused by liquid leakage.

[0045] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A pneumatic quantitative dispensing device, characterized in that, It includes a frame, a sub-assembly structure, a material tray, and a stepper drive mechanism. The sub-assembly structure is located on the upper part of the frame. The material tray and the stepper drive mechanism are both mounted on the frame, and the stepper drive mechanism is connected to the material tray in a transmission manner. The dispensing structure includes an inlet pipe, a pneumatic liquid supply pump, and a dispensing pipe. The pneumatic liquid supply pump is connected between the inlet pipe and the dispensing pipe. The dispensing pipe has multiple dispensing ports, each of which is equipped with a flow valve. The material tray is movably installed on the lower side of the dispensing pipe. The stepper drive mechanism includes a feeding cylinder, a first rotating shaft, a first rack, a first gear, a second gear, and a second rack. The feeding cylinder is connected to the first rack and extends in the same direction. The first rotating shaft is rotatably mounted on the frame. The first gear is mounted on the first rotating shaft, and a first one-way bearing is provided between the first gear and the first rotating shaft. The first rack meshes with the first gear. The second gear is mounted on the first rotating shaft to prevent rotation. The second rack is fixedly disposed on the lower side of the material tray. The second gear meshes with the second rack.

2. The pneumatic quantitative dispensing device according to claim 1, characterized in that, The first one-way bearing is used to link the first gear with the first rotating shaft when the feeding cylinder drives the material carrier to move along the feeding direction; and to separate the first gear from the first rotating shaft when the feeding cylinder drives the material carrier to move along the reset direction.

3. The pneumatic quantitative dispensing device according to claim 2, characterized in that, The frame is also equipped with a pneumatic limit switch, which is located on the lower side of the dispensing tube and is used to detect whether the material bottle is in the liquid receiving position.

4. The pneumatic quantitative dispensing device according to claim 3, characterized in that, The frame is also equipped with a feeding pneumatic clutch, which is vertically connected to the feeding cylinder and the first rack to drive the first rack to mesh with the first gear during step feeding.

5. The pneumatic quantitative dispensing device according to claim 2, characterized in that, The stepper drive mechanism further includes a reset cylinder, a second rotating shaft, a third rack, a third gear, a fourth gear, and a fourth rack. The second rotating shaft and the first rotating shaft are spaced apart along the length of the liquid distribution pipe. The reset cylinder is connected to the third rack and extends in the same direction. The third gear is mounted on the second rotating shaft, and a second one-way bearing is provided between the third gear and the second rotating shaft. The third rack meshes with the third gear. The fourth gear is mounted on the second rotating shaft to prevent rotation. The fourth rack is fixedly disposed on the lower side of the material tray. The fourth gear meshes with the fourth rack. The fourth rack is arranged parallel to and spaced apart from the second rack.

6. The pneumatic quantitative dispensing device according to claim 5, characterized in that, The second one-way bearing is used to link the third gear with the second rotating shaft when the reset cylinder drives the material carrier to move in the reset direction; and to separate the third rack from the second rotating shaft when the reset cylinder drives the material carrier to move in the feeding direction.

7. The pneumatic quantitative dispensing device according to claim 1, characterized in that, The loading tray is provided with two positioning plates, which are arranged at intervals. Each of the two positioning plates has multiple positioning holes, which are distributed in a matrix along the length of the liquid distribution pipe and along the extension direction of the feeding cylinder.

8. The pneumatic quantitative dispensing device according to claim 7, characterized in that, In the extending direction of the feeding cylinder, the unit distance between two adjacent bottles of the positioning plate is equal to the driving stroke of the feeding cylinder.

9. The pneumatic quantitative dispensing device according to claim 1, characterized in that, A lifting cylinder is also installed on the upper side of the frame. The driving direction of the lifting cylinder extends vertically, and the liquid distribution pipe is fixedly connected to the lower end of the lifting cylinder.

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